GSEB Class 9 Social Science Solutions Chapter 14 India Location Geological Structure and Physiography-II

Gujarat Board Class 9 Social Science India: Location Geological Structure and Physiography-II Textbook Questions and Answers

Write a short answer for the following questions.

Question 1. Which passes are located in the Himalayan system?
Answer: Jelep La, Nathu La, Shipki La.
In simple words: Jelep La, Nathu La, and Shipki La are mountain passes found in the Himalayan region.

Exam Tip: Remember key geographical features and their specific locations for questions about physical divisions of India.

Question 2. What is Regolith?
Answer:1. Soil is a product of rocks undergoing denudation. The rock surface gets worn away by elements such as temperature, rain, snow, air, plant life, and insects, which causes it to break down into a powdery form. This then creates the land layer. 2. This land layer contains gravels, smaller stones, pebbles, and soil particles, which are also called 'Regolith'. It only holds mineral components. 3. Biotic matter, air, and water combine with this material. Eventually, soil is formed from this mixture.
In simple words: Regolith is made up of weathered rock, small stones, and soil particles. It forms a land layer that gets mixed with living matter, air, and water to become soil.

Exam Tip: Define 'Regolith' clearly and explain how it contributes to soil formation, mentioning the key components.

Question 3. Which are the major types of rocks? Which are they?
Answer: Various kinds of rocks are formed due to different processes. Rocks can be separated into three primary categories based on how they are formed. These are: 1. Igneous rocks 2. Stratified Rocks 3. Metamorphic Rocks.
In simple words: Rocks are classified into three main types based on their formation: Igneous, Stratified, and Metamorphic rocks.

Exam Tip: Name the three main rock types and briefly describe the basis for their classification.

Question 4. State the soil formation process.
Answer:1. Soil results from the breaking down of rocks. 2. The rock surface gets eroded by factors like temperature, rain, snow, air, vegetation, and insects, turning into a powdery substance. This then creates the land layer. 3. In this land layer, you find gravels, smaller stones, pebbles, and soil particles, which are known as 'Regolith'. 4. It only has mineral parts. Then, organic material, air, and water combine with it. Finally, soil is created from this blend. 5. The process of soil formation is a long-term event.
In simple words: Soil forms when rocks break down from natural forces, turning into a fine powder (Regolith). This powdery layer mixes with organic matter, air, and water over a long time to create soil.

Exam Tip: Detail the steps of soil formation, starting from rock denudation and concluding with the combination of various elements.

2. Explain the following terms:

Question. 1. Deposition:
Answer: The Earth's moving elements, such as rivers, wind, and rain, deposit material at any location when their speed decreases. This process is called deposition.
In simple words: Deposition happens when natural forces like rivers and wind drop off materials they've carried to a new place as they slow down.

Exam Tip: Define deposition by explaining how transporting agents like wind and water drop sediment when their energy reduces.

Question. 2. Bangar:
Answer: Soil containing older alluvium in the upper valley area of a river is called Bangar soil.
In simple words: Bangar soil is older alluvial soil found in the higher parts of a river valley.

Exam Tip: Clearly define Bangar soil as old alluvial soil located away from current floodplains.

Question. 3. Mineral:
Answer: The substance that forms from a natural organic or inorganic process and has a particular chemical makeup is known as a mineral.
In simple words: A mineral is a naturally occurring substance with a specific chemical composition, formed by organic or inorganic processes.

Exam Tip: When defining mineral, highlight its natural origin and distinct chemical composition.

Question. 4. Rock:
Answer: A complex material made up of one or more minerals is called rock.
In simple words: A rock is a solid material made from one or more different minerals.

Exam Tip: Emphasize that rocks are composed of one or more minerals when defining them.

Question. 5. Soil:
Answer: The thin layer formed by the organic and inorganic matter on the surface of the earth is called soil.
In simple words: Soil is the thin surface layer of Earth, made from both organic and inorganic materials.

Exam Tip: Define soil by mentioning its composition (organic and inorganic matter) and its location on the Earth's surface.

3. Write to the point answers of the following questions:

Question 1. Archipelagos of India
Answer:1. India has a few archipelagos, with Andaman Nicobar and Lakshadweep being the main ones. 2. Lakshadweep contains many smaller islands located some distance from the Kerala coast. These islands have a horseshoe shape and are called 'Atolls' due to their coral origin. 3. Other archipelagos also include the Andaman and Nicobar islands, which are found in the Bay of Bengal. 4. There are more islands in the Andaman and Nicobar archipelagos located in the Bay of Bengal. 5. They are very far from the Indian coast. Some mountain ranges are present, with a few formed by volcanic activity. 6. These islands stretch over 350 km and hold great strategic importance. 7. Barren, in the Andaman and Nicobar archipelago, is India's only active volcano. 8. Narkondam, a dormant volcano, is very close to it.
In simple words: India has several island groups, mainly Andaman Nicobar and Lakshadweep. Lakshadweep has coral atolls near Kerala, while Andaman Nicobar in the Bay of Bengal features many islands, some formed by volcanoes, including India's only active one, Barren Island.

Exam Tip: When describing India's archipelagos, mention the major groups (Andaman Nicobar, Lakshadweep), their locations, key features like coral formations or volcanoes, and their strategic significance.

Question 2. State the types of soils of India and give detailed information.
Answer: The thin layer formed of organic and inorganic matter on the earth's surface is called soil. It is a result of rocks breaking down. The soil in India is categorized into six types: 1. Alluvial soil 2. Black soil or Regur soil 3. Red soil 4. Laterite soil 5. Mountain soil 6. Desert soil. Thus, due to the varied climate and physical features, different kinds of soils are found in the country.
In simple words: Soil, made from organic and inorganic matter, forms from broken-down rocks. India has six main soil types: Alluvial, Black (Regur), Red, Laterite, Mountain, and Desert soil, reflecting its diverse climate and geography.

Exam Tip: Start by defining soil and then list all six major types found in India, briefly mentioning that this diversity is due to climate and physiography.

Question 3. Classify the minerals.
Answer:(a) Metallic Minerals: These include precious metallic minerals like Platinum, Gold, and Silver, etc. * Light metallic minerals include Magnesium, Bauxite, Titanium, etc. * Minerals of general use are Iron, Copper, Lead, Zinc, Tin, Nickel, etc. * Minerals used in a combined form or as an alloy include Chromium, Manganese, Tungsten, Vanadium, etc. (b) Non-Metallic Minerals: This group includes Limestone, Chalk, Asbestos, Mica, Fluorspar, Gypsum, Sulphur, Diamond, etc. (c) Minerals used as energy resources: These comprise Coal, Mineral oil, Natural gas, Uranium, Thorium, etc.
In simple words: Minerals are categorized into metallic (like gold and iron), non-metallic (like limestone and mica), and energy resources (like coal and uranium). Metallic minerals are further grouped by their properties or use.

Exam Tip: Classify minerals into metallic, non-metallic, and energy resources, providing examples for each category to illustrate the distinction.

4. Select the correct options of the following questions and write answers.

Question 1. Patkai Hills: Arunachal Pradesh: Lushai
A. Nagaland
B. Manipur
C. Mizoram
D. Meghalaya
Answer: (C) Mizoram
In simple words: The correct state associated with Lushai is Mizoram.

Exam Tip: Pay attention to specific geographical names and their corresponding states or regions in such match-the-following types of questions.

Question 2. Who from the following speaks the incorrect statement? Find out:
A. Kashish: Gold, silver, platinum are precious minerals
B. Kinni: Bauxite, titanium and magnesium are light metallic minerals
C. Dhruvi: Tungston, manganese, and chromium etc. are non-metallic minerals.
D. Nidhi: Lead, copper and iron etc, are minerals taken in common use.
Answer: (C) Dhruvi: Tungston, manganese, and chromium etc. are non-metallic minerals.
In simple words: The incorrect statement is by Dhruvi, because tungston, manganese, and chromium are actually metallic minerals, not non-metallic ones.

Exam Tip: Carefully read each statement and recall the classification of minerals (metallic vs. non-metallic) to identify the false claim.

Question 3. Join correct matches:
A. 1 – B, 2 – C, 3 – A
B. 1 – A, 2 – C, 3 – B
C. 1 - C, 2 – B, 3 – A
D. 1 – B, 2 – A, 3 – C
Answer: (A) 1 – B, 2 – C, 3 – A
In simple words: The correct combination for joining the matches is 1 with B, 2 with C, and 3 with A.

Exam Tip: To answer match-the-following questions, try to find one or two definite pairs first, which can help narrow down the options for the rest.

Question 4. Which of the following statement is true?
A. Western Ghats have more height in north region.
B. Western Ghats are called Nilgiri in Karnataka.
C. Western Ghats are spread north-south in unbroken form along the Arabian Sea coast.
D. Western Ghats are called as Sahyadri on the border of Kerala and Tamil Nadu.
Answer: (C) Western Ghats are spread north-south in unbroken form along the Arabian Sea coast.
In simple words: The true statement is that the Western Ghats extend continuously from north to south along the Arabian Sea coast without interruption.

Exam Tip: Focus on the continuity and direction of major geographical features like the Western Ghats when identifying true statements.

Question 5. Which plateau is situated between Aravalli and Vindhyachal?
A. Chhota Nagpur
B. Malwa
C. Deccan
D. Shilong
Answer: (B) Malwa
In simple words: The Malwa Plateau is located between the Aravalli and Vindhyachal mountain ranges.

Exam Tip: Memorize the relative locations of major plateaus and mountain ranges to correctly answer questions about their geographical placement.

Additional Important Questions and Answers

Answers

I. Answer the following questions.

Question 1. What is physiography? Into how many physiography region can India be divided?
Answer: The various landforms of the earth, such as mountains, plateaus, plains, islands, etc., are termed physiography. Based on its physiography, India can be separated into the following physiographic regions: 1. Northern Mountainous Region 2. Great Northern Plains 3. Peninsular Plateau 4. Coastal Plain 5. Archipelagos.
In simple words: Physiography describes Earth's landforms like mountains and plains. India is divided into five main physiographic regions: Northern Mountains, Great Northern Plains, Peninsular Plateau, Coastal Plain, and Archipelagos.

Exam Tip: Define physiography clearly, then list all five distinct physiographic divisions of India for a complete answer.

Question 3. Give a brief idea about Northern Mountainous Region
Answer: Northern Mountainous Region: 1. The mountain range that stretches from North India to East India is called the northern mountain range of India. 2. This is a crucial natural area of India. It is known as the Himalayan mountain system, which spans over 2400 km from west to east in the north. 3. The Himalayan Mountain Range is also referred to as the Himalayan Mountain System. 4. This mountain range has an arc shape, with its width varying between 240 km to 320 kilometers. 5. The Himalaya is not a single mountain but a series of many mountain ranges. 6. The Himalayas start from Afghanistan, move eastwards, and reach Myanmar via Pakistan, India, Nepal, and Bhutan. It also extends further into Tibet. 7. The Pamir Knot is located at the meeting point of the Himalayas, Tian Shan, and other mountains. 8. The Himalayas extend from the Sindhu River in the west to the Brahmaputra in the east. They form a very important natural vegetation zone in India. 9. These mountainous regions receive very heavy rainfall, resulting in dense forests. Consequently, roads and railways have not developed much in these areas.
In simple words: India's Northern Mountainous Region is the Himalayan system, an arc-shaped chain of ranges stretching 2400 km from west to east. It includes peaks like Pamir Knot, supports vital vegetation due to heavy rainfall, but has limited transport development.

Exam Tip: When describing the Northern Mountainous Region, include its extent, characteristic shape, presence of multiple ranges, geographical spread, major features like Pamir Knot, and its impact on vegetation and infrastructure development.

Question 3. Write a detailed note on Northern Himalayas:
Answer: Northern Himalayas: The Himalayan Mountain Range is separated into three distinct parallel ranges. (i) Greater Himalayas (Inner Himalayas): 1. The northernmost range is called the Greater or Inner Himalayas, or the Himadri. 2. The Greater Himalayas include more than 40 peaks that are taller than 7000 meters. 3. Among them, the most famous is Mount Everest, the world's highest peak (8848 meters). 4. Mount Everest is located on the Nepal-China border. It is known as Sagarmatha in Nepal and Chomolungma in Tibet. 5. Mount Godwin Austin, or K2 (8611 m), is India's highest peak. 6. The Greater Himalayas also contain several high mountain passes, such as Jelep La, Nathu La, and Shipki La, etc. 7. Mansarovar, a sacred holy place, is situated in this range in Tibet-China. (ii) Central Himalayas (Lesser Himalayas): 1. The Central Himalayas, which is the second range of the Himalayas, lies south of the Greater Himalayas. 2. It is also called the Lesser Himalayas or Himachal and stretches for a width of 80 to 100 km. 3. This range includes mountain ranges like Pir Panjal, Mahabharata, and Nagtiba, etc. 4. Many well-known hill stations, such as Dalhousie, Dharamshala, Shimla, Mussoorie, Ranikhet, Almora, Nainital, and Darjeeling, etc., are found in this range. 5. Beautiful natural valleys like Kullu, Kangada, and Kashmir are also present in this region. (iii) Shiwalik Range (Outer Himalayas): 1. The Shiwalik or Outer Himalayas is the third mountain range of the Himalayas, located south of the Central Himalayas.
In simple words: The Northern Himalayas have three main ranges: Greater (Himadri) with the world's highest peaks like Everest and K2, Central (Lesser/Himachal) with famous hill stations and valleys, and Shiwalik (Outer Himalayas) as the southernmost range. Each has distinct features and importance.

Exam Tip: Describe each of the three parallel ranges of the Northern Himalayas (Greater, Central, Shiwalik) individually, noting their key characteristics, famous peaks or places, and relative locations to each other.

Question 4. Write a brief note on Eastern Himalayas:
Answer: Eastern Himalayas: 1. They are located between Nepal in the west and Myanmar in the east. 2. Ranges situated in the eastern part of the Himalayas have a lower height. 3. Some of them are more renowned as hills rather than mountain ranges. They are distributed as small ranges. 4. Among them, the Patkai Hills are located in Arunachal Pradesh, the Naga Hills in Nagaland, and the Lushai (Mizo) Hills in Mizoram. 5. These hills are situated near India's eastern border. They extend to the Arakan Yoma range of Myanmar. 6. Garo, Khasi, and Jaintia are some of the famous hills in Meghalaya.
In simple words: The Eastern Himalayas, located between Nepal and Myanmar, are generally lower in height and better known as hills. They include important ranges like Patkai in Arunachal Pradesh, Naga Hills, Lushai Hills in Mizoram, and Garo, Khasi, and Jaintia Hills in Meghalaya, extending towards Myanmar.

Exam Tip: When writing about the Eastern Himalayas, mention their geographical extent, their characteristic lower height, and name significant hill ranges and the states they are in.

Question 5. Write a short note on Northern Plain.
Answer: Northern Plain: 1. The plain situated between the northern mountainous region and the southern peninsula is called the northern plain. 2. This plain formed due to the alluvial deposits brought by Himalayan rivers such as Satluj, Ganga, and Brahmaputra. 3. In some places, the layers of alluvium are about 50 meters thick. 4. Since these plains cover a very large area in North India, they are also known as the vast plains of Northern India. 5. The plain is about 2400 km long and is considered one of the world's largest river plains. 6. The plain is almost a flat land. None of its parts are higher than 180 meters from sea-level. 7. The Satluj plain is west of Delhi, while the Ganga plain is in the east. 8. Major cities like Delhi, Kolkata, Kanpur, Lucknow, Allahabad, Varanasi, and Patna, etc., are located in this plain.
In simple words: The Northern Plain, a large flat area between the northern mountains and southern peninsula, was created by Himalayan river deposits. It's about 2400 km long, mostly below 180 meters altitude, and home to major cities like Delhi and Kolkata.

Exam Tip: In your note on the Northern Plain, describe its location, formation by rivers, its vastness and flatness, and mention some important cities situated within it.

Question 6. What does 'DOAB' and 'PUNJAB' mean?
Answer:1. The word 'DO' means two, and 'AB' means water; 'PUNJ' means five. 2. So, a region between two rivers is called 'DOAB'. 3. Similarly, the region or plain formed by the water of five rivers is called 'PUNJAB'. This is how Punjab State received its name. 4. Satluj, Jhelum, Chenab, Ravi, and Beas are the five rivers that flow through Punjab.
In simple words: 'DOAB' means a land area between two rivers ('Do' for two, 'Ab' for water). 'PUNJAB' means the land of five rivers ('Punj' for five, 'Ab' for water), which gave the state its name, referring to the Satluj, Jhelum, Chenab, Ravi, and Beas rivers.

Exam Tip: Explain the etymology of 'Doab' and 'Punjab' by breaking down the terms and listing the five rivers associated with Punjab.

Question 7. Give an account of Peninsular plateau.
Answer:1. The Peninsular Plateau is India's oldest landmass. 2. It lies to the south of the Plains of North. 3. Its shape resembles an inverted triangle. 4. It is surrounded by sea on three sides. Hence, it is called a Peninsular plateau. 5. Most of this plateau is in southern India. Therefore, it is also called 'Southern Plateau'. 6. The average height of this plateau is about 600 to 900 meters. 7. The northern part of this plateau has a north-eastern slope, evident from the flow of the Chambal, Son, and Damodar rivers. 8. The southern part slopes towards the south-east.
In simple words: The Peninsular Plateau is India's oldest land, shaped like an inverted triangle and located south of the Northern Plains. Surrounded by sea on three sides, this "Southern Plateau" has an average height of 600-900 meters, with northern and southern parts sloping northeast and southeast respectively.

Exam Tip: Describe the Peninsular Plateau's age, location, shape, average height, and the direction of its slopes, giving examples of rivers that indicate its northern slope.

Question 8. Write a short note on Malwa Plateau.
Answer:1. It is a plateau region in north-central India and forms one of the parts of the Peninsular Plateau. The plateau is also known as the central upland. 2. The Aravalli range is located in the north-western part of the Malwa Plateau. 3. The Aravalli is one of the world's oldest ranges. It is a folded mountain. 4. Mount Abu is a famous hill station of the Aravalli range, known for its beauty and pleasant environment. 5. Guru Shikhar, the highest peak (1722 meters) of the Aravalli range, is located in Mount Abu. Northern part of Malwa Plateau: 1. The Vindhyachal range lies to the east and south of the Malwa Plateau. 2. The Chambal and Betwa rivers originate from Vindhyachal, flow northwards, and join the Yamuna river. 3. The Son river flows northwards and meets the Ganga river. 4. Looking at how these rivers flow, we can say that the northern part of the Malwa Plateau slopes towards the north. Western part of Malwa Plateau: 1. Additionally, the Luni and Banas rivers originate in the Aravalli range in the north-west. 2. These rivers disappear in the Rann of Kachchh, whereas the Sabarmati and Mahi rivers meet the Gulf of Khambhat. 3. From the flow of these rivers, we can confirm that the western part of the Malwa Plateau slopes towards the south-west. North-eastern part of Malwa Plateau: 1. The north-eastern part of this Malwa Plateau is known as Bundelkhand. 2. The Rajmahal Hills, Shillong Plateau, and Ranchi Plateau are a part of the Chhota Nagpur Plateau near Bundelkhand.
In simple words: The Malwa Plateau is a central Indian upland, bordered by the ancient Aravalli range to the northwest and Vindhyachal to the south. Its northern rivers flow north to the Yamuna and Ganga, while western rivers disappear or flow southwest to the Gulf of Khambhat, indicating its varying slopes. Its northeastern part is called Bundelkhand, which connects to other plateaus and hills.

Exam Tip: Describe the Malwa Plateau's location, its relation to surrounding mountain ranges (Aravalli, Vindhyachal), the direction of its slopes as indicated by river flows, and the names of its regional divisions like Bundelkhand.

Question 9. Give a detailed idea about Deccan Plateau.
Answer:1. It stretches from the Satpuda, Mahadev, and Maikal ranges in the north down to the southern tip of peninsular India. It forms one of the parts of the Peninsular Plateau. 2. The north-western parts of the plateau are made up of lava deposits. 3. The Western Ghats form the western boundary of the Deccan Plateau, while the Eastern Ghats form its eastern boundary. 4. The Western Ghats run north-south along the Arabian Sea Coast. It has several local names. 5. The Western Ghats are known as 'Sahyadri' in Maharashtra and Karnataka. It is called 'Nilgiri' in Tamil Nadu. 6. On the border of Kerala and Tamil Nadu, it is known as Annamalai, and further south, it is called Cardamum Hills. 7. The southern portion of the Western Ghats is higher. 8. The average height of the Deccan Plateau ranges between 900 to 1000 meters. In a few places, the height is even greater. 9. Some isolated hills, higher than 900 meters, form the eastern boundary of this plateau. These hills together are called 'Eastern Ghats'. 10. Except for the Narmada and Tapi rivers, which flow westwards and meet the Arabian Sea, most rivers of the Deccan Plateau flow eastwards and meet the Bay of Bengal. 11. From this, it is clear that the Eastern Ghats have a gentle slope towards the south-east.
In simple words: The Deccan Plateau extends from the Satpuda ranges to India's southern tip, with lava deposits in its northwest. It is flanked by the Western Ghats (known as Sahyadri or Nilgiri) to the west and the Eastern Ghats to the east, with an average height of 900-1000 meters. Most rivers flow east into the Bay of Bengal, except Narmada and Tapi.

Exam Tip: When discussing the Deccan Plateau, describe its extent, composition, its boundaries (Western and Eastern Ghats with their local names), average height, and the general direction of river flow to explain the plateau's slope.

Question 10. Write a short note on Coastal Plains of India.
Answer: Coastal Plain (Plains along the Sea Coast): The Peninsular Plateau is surrounded by coastal plains from Kachchh in the west to Odisha in the east. These coastal plains are divided into * West coast plain and * East coast plain. West Coast Plain: 1. The west coast plain stretches from Gujarat in the west to Kerala in the south. 2. The entire plain is a narrow strip, except in Gujarat. 3. This plain is very uneven. 4. In the north, it is known as the Konkan Coast, while from Goa to its southern end, it is called the Malabar Coast. 5. Most rivers of the West Coast Plain have formed creeks and estuaries at their mouths. 6. Many natural harbors (ports) such as Mumbai, Marmagao, etc., are located on this coast. 7. Also, backwaters have formed along the southern coast of Kerala. These are known as 'Kayak' in the local language. East Coast Plain: 1. The East Coast plain is much wider than the west coast plain. 2. A large amount of alluvial deposit is found in the deltas of the Kaveri, Krishna, Godavari, and Mahanadi rivers. 3. The northern part of this plain is known as the Northern Circle. 4. The southern part of the East Coast Plain, which includes the Tamil Nadu coast, is called the Coromandel Coast.
In simple words: India's coastal plains encircle the Peninsular Plateau from west to east, divided into West and East Coast Plains. The narrow, uneven West Coast Plain (Konkan and Malabar) has estuaries, natural harbors, and Kerala's backwaters. The wider East Coast Plain features river deltas (Kaveri, Krishna, Godavari, Mahanadi) and is known as the Northern Circle and Coromandel Coast.

Exam Tip: Describe both the West and East Coastal Plains, noting their extent, width, key geographical features (like deltas, estuaries, backwaters), and important local names for different sections (Konkan, Malabar, Coromandel).

Question 11. Write a brief note on Igneous rocks.
Answer:1. The Earth's interior is extremely hot. So, the material inside is in a semi-liquid state, which is called 'magma or lava'. 2. When this magma cools and hardens, it crystallizes and turns into igneous rocks. 3. Since these rocks are formed due to the effect of heat, they are called Igneous (Agneya) or fire rocks. 4. During the formation of the earth's crust, igneous rocks were the first to form. Hence, they are called Primary Rocks. 5. Igneous rocks are found in many places in Rajasthan, Madhya Pradesh, and the Southern peninsula. 6. Igneous rocks are the hardest of all rocks. 7. Granite is a well-known example of plutonic rock; Basalt is also this type of rock.
In simple words: Igneous rocks form when molten magma or lava from Earth's hot interior cools and solidifies. They are called 'fire rocks' or 'Primary Rocks' because they were the first to form the Earth's crust. These are the hardest rocks, found in places like Rajasthan and the Southern peninsula, with granite and basalt as common examples.

Exam Tip: Explain the origin of igneous rocks from magma/lava, their alternative names (fire rocks, primary rocks), their characteristics (hardness), and provide common examples like granite and basalt.

Question 12. Write a brief note on Stratified Rocks.
Answer: Stratified (Sedimentary) Rocks: 1. After breaking apart, sand, mud, and pebbles get laid down in layers. Over time, these layers are compressed under more and more layers. 2. Over a period, igneous rocks break down due to the combined action of water and other forces. These rocks are then deposited as layers. 3. Over time, these layers are compacted under more and more layers and water. 4. The upper layered rocks put pressure on the older rock layers below them. Eventually, rocks with different layers are formed. 5. These rocks are called 'Sedimentary Rocks' or 'Stratified Rocks'. 6. Examples of stratified rocks include gypsum, limestone, and coal. 7. Coal and gypsum are obtained from Bihar and Jharkhand.
In simple words: Stratified, or sedimentary, rocks form when sand, mud, and pebbles settle in layers. Over time, these layers get squashed together by the weight of more layers and water, solidifying into new rocks. Gypsum, limestone, and coal are examples of these layered rocks, found in regions like Bihar and Jharkhand.

Exam Tip: Describe the process of sedimentary rock formation, emphasizing the layering and compression of sediments, and provide key examples like gypsum, limestone, and coal.

Question 13. Write a brief note on Metamorphic Rocks
Answer: Metamorphic Rocks: 1. In particular conditions, the form, composition, and other characteristics of rocks undergo a complete change. 2. Due to the combined action of two factors, specifically high temperature and pressure within the rock state, igneous and sedimentary rocks transform into a completely new form. 3. In this way, the newly formed rocks are known as metamorphic rocks. 4. Marble and quartzite are the best examples of Metamorphic Rocks.
In simple words: Metamorphic rocks are formed when existing rocks (igneous or sedimentary) change their form and composition due to extreme heat and pressure. Marble and quartzite are good examples of these transformed rocks.

Exam Tip: Explain that metamorphic rocks form from existing rocks under intense heat and pressure, leading to changes in their form and composition, and cite marble and quartzite as examples.

Question 14. Black Soil is favourable for growing cotton. Give reason.
Answer:1. Black soil is formed from metamorphic rocks. 2. It has the ability to retain moisture for a long time. 3. In the rainy season, black soil becomes sticky and wet. 4. While in summer, the upper layer of black soil becomes dry. 5. This soil is very sticky and fertile. 6. Such soil is suitable for growing cotton. 7. That is why it has become famous as Black cotton soil.
In simple words: Black soil is excellent for cotton because it holds moisture for a long time, remains sticky and fertile, and these properties make it ideal for cotton cultivation, earning it the name "Black cotton soil."

Exam Tip: Highlight the key properties of black soil, especially its moisture retention and stickiness, which directly contribute to its suitability for cotton cultivation.

Question 15. Northern Plains are densely populated. Give reason.
Answer:1. The soil of the northern plains contains a lot of alluvium, making it quite fertile. 2. The climate in this region is appropriate for agriculture. 3. Also, water is available here in sufficient quantity. 4. Due to these reasons, agriculture has developed well in the northern plains. 5. Hence, more and more people prefer to settle in the northern plains.
In simple words: The Northern Plains are heavily populated because their alluvial soil is very fertile, the climate suits farming, and plenty of water is available. These factors have led to strong agricultural development, attracting many people to settle there.

Exam Tip: List the primary reasons for dense population in the Northern Plains, focusing on fertile soil, suitable climate, water availability, and resulting agricultural prosperity.

Question 16. Western Ghats are compact while Eastern Ghats are scattered. Give reason.
Answer:1. Most rivers in South India flow towards the east. 2. Consequently, these rivers flow from west to east through the Eastern Ghats and meet the Bay of Bengal. 3. This flow of rivers has led to the breaking up of the Eastern Ghats. 4. No such rivers flow through the Western Ghats. 5. Therefore, the Western Ghats form a compact and continuous range, while the Eastern Ghats are scattered.
In simple words: The Western Ghats are a continuous mountain range because no major rivers flow through them. In contrast, the Eastern Ghats are broken and scattered because many South Indian rivers flow eastward, cutting through them to reach the Bay of Bengal.

Exam Tip: Explain the difference in continuity between the Western and Eastern Ghats by referencing the direction of river flow in South India and how rivers dissect the Eastern Ghats but not the Western Ghats.

Question 17. The physiography of India is quite diverse. Give reason.
Answer:1. India is a large country with varied physiography. 2. In the north, there are huge Himalayan mountain ranges, many of which are covered in snow. 3. The southern part of India is a peninsula. 4. India has a very long coastline. This coastal belt is used for fishing, tourism, waterways, etc. 5. There are dense forests in several parts of India. 6. The northern fertile plains are called 'Storehouse of Grains', whereas the southern plateau is rich in mineral resources. 7. Rajasthan and parts of Gujarat form the desert of India. 8. Due to a variety of relief features found in India, it can be said that the physiography of India is quite diverse.
In simple words: India's large size and diverse landforms—including snow-capped Himalayas, a peninsula with long coastlines, dense forests, fertile northern plains, mineral-rich southern plateaus, and deserts—all contribute to its highly varied physiography.

Exam Tip: To demonstrate India's diverse physiography, enumerate its different geographical features such as mountains, plains, plateaus, coastlines, and deserts, and highlight their unique characteristics or resources.

Question 20. India's rich physiography works as a strong pillar of Indian economy. Give reason.
Answer:
1. India has diverse and rich land features.
2. Many types of trees are present in the Himalayas, which are utilized for making medicines and beauty products.
3. The peninsular India's extensive coastline is employed for fishing, travel, and as a water route.
4. Various Indian states possess abundant mineral wealth, which is then used in many industries.
5. Significant minerals like gold, silver, magnesium, iron, and copper are found plentifully across India.
6. Because of the highly fertile northern plains, they are known as the 'Storehouse of grains'.
7. For these reasons, India's diverse physical features serve as a vital support for its economy.
In simple words: India's varied land forms like mountains, coasts, and plains help its economy a lot. They offer resources like minerals, forests, fertile soil, and routes for trade and tourism, making the country strong.

Exam Tip: When asked for reasons, list each point clearly and briefly explain its economic importance.

Question 21. How many types of soils are found in India? Describe them.
Answer: Soils are categorized into six types in India. These are:
1. Alluvial soil
1. This soil can be separated into two parts:
* Khadar, and
* Bangar.
2. Khadar soil is created from recent alluvial deposits, often developing due to river floods. This type of soil is usually found close to rivers and is typically sandy.
3. Bangar soil contains older alluvium in the river's upper valley area; it is sticky, dark, and commonly found across India.
4. Its fertility varies by location, but generally, it is highly fertile, occurring in areas like Punjab, Uttar Pradesh, Bihar, and West Bengal.
2. Black soil
1. This soil is largely present in Maharashtra, western Madhya Pradesh, Gujarat, Karnataka, Andhra Pradesh, and Telangana.
2. Black soil originates from the peninsular plateau, being very sticky and productive.
3. It can retain moisture for a longer period.
4. Formed from metamorphic rocks, it helps greatly in cotton farming, thus earning its name as Black Cotton soil.
5. It is also called regur soil.
3. Red Soil
1. This type of soil is found in areas with igneous and metamorphic rocks, getting its red color from iron and other organic matter.
2. The soil is permeable and productive, visible in Goa, Tamil Nadu, Karnataka, Andhra Pradesh, Odisha, and Jharkhand.
4. Laterite Soil
1. This soil forms because of too much erosion caused by rain.
2. Heavy rainfall causes the organic matter from the topsoil to move down into lower layers (leaching), making the soil less productive due to reduced organic content.
3. The red sandstones in this soil have iron and aluminum.
4. The wearing away of these rocks gives the soil its red hue.
5. This soil is present in hilly areas of the Deccan, Karnataka, Kerala, Odisha, and parts of the North-East.
5. Mountain soils
1. It has more humus because of forests, though this amount varies by location.
2. This soil on the Shivalik Range is not very fertile and is underdeveloped.
3. The soil is sandy, permeable, and lacks organic matter.
4. This soil type is present in the country's hilly regions, including Meghalaya, Arunachal Pradesh, the eastern hill range, Uttarakhand, Himachal Pradesh, and Jammu and Kashmir.
6. Desert soils
1. This soil is present in the dry and partly-dry areas of Gujarat, Rajasthan, Punjab, and Haryana.
2. The soil in these areas is highly alkaline and contains minimal organic matter.
3. Farming in this soil is only viable with proper irrigation.
In simple words: India has six main soil types: Alluvial (Khadar and Bangar), Black, Red, Laterite, Mountain, and Desert soils. Each type has different features like fertility, color, and location, affecting how plants grow there.

Exam Tip: When asked to describe soil types, list each type and provide a brief explanation of its key characteristics, formation, and main locations.

II. Match the following:
Answer:
1. (D)
2. (F)
3. (E)
4. (C)
5. (A)
6. (B)
In simple words: This section provides the correct pairings for a matching exercise, indicating which option from one list corresponds to an option from another.

Exam Tip: For 'Match the following' questions, carefully read both columns and identify logical connections or definitions. Confirm your choices by eliminating incorrect pairings.

III. Map-based Question

Question 22. Identify the major soil types shown in the given map and write their names.
Answer: The major soil types typically shown on an Indian soil map include Alluvial soil, Black soil or Regur soil, Red soil, Laterite soil, Mountain soil, and Desert soil. These classifications represent the varied geological and climatic conditions across the country.
In simple words: Based on typical maps of India, the main types of soil you would see are Alluvial, Black, Red, Laterite, Mountain, and Desert soils. These names help us understand the different ground types in India.

Exam Tip: For map-based questions, carefully study the map legends and colors to correctly identify and name the features asked, ensuring precise labeling.